RECON: TNO occultation with 01KG76

Event between 01KG76 and star GA0660:19580606 with event index number of 1263406

Geocentric closest approach at 2023/07/08 06:38:14 UTC

J2000 position of star is 17:47:56.9 -23:10:44
Equinox of date position of star is 17:49:21.8 -23:11:07
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 85 degrees from the moon. Moon is 70% illuminated.
Apparent brightness V=23.5

[RECON map]
Object is 50.8 AU from the Sun and 49.8 AU from the Earth.
Apparent velocity is 23.8 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 1674 seconds.
The 1-sigma cross-track error in the shadow position is 5205 km.
The sky-plane scale is 36150.8 km/arcsec.

The object has an absolute magnitude Hv=6.4
Diameter=311.9 km assuming a 5% albedo -- 13.1 sec chord
Diameter=127.3 km assuming a 30% albedo -- 5.3 sec chord
Dynamical classification is 9:4EEEEE
 
 
 
 
 
 

Star training set for 01KG76, (2023/07/08 06:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.2 -26:28:56  0.9 18.10 102
35Eta Oph      17:11:43.7 -15:45:09  2.6 11.57  95
PPM 267309     17:49:10.9 -22:29:04  6.1  0.70  85
PPM 267328     17:49:48.4 -23:14:20  8.3  0.11  85
01KG76         17:49:22.7 -23:11:07 16.9        85
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 0.5 sigma about the mid-time.
The median site spacing is 16.5 km RECON observability=0.7 and success probability=1.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:37:43 -15.1 AT Up 13.9 191.8 Really Low 06:22:43 - 06:52:43 11547
Kamloops 06:38:23 -14.3 AT Down 16.1 178.3 Really Low 06:23:23 - 06:53:23 11526
Kelowna 06:38:22 -15.3 AT Down 17.0 179.1 Really Low 06:23:22 - 06:53:22 11502
Peachland 06:38:22 -15.3 AT Down 17.1 178.9 Really Low 06:23:22 - 06:53:22 11498
Summerland 06:38:21 -15.4 AT Down 17.2 178.9 Really Low 06:23:21 - 06:53:21 11493
Penticton 06:38:20 -15.5 AT Down 17.3 179.0 Really Low 06:23:20 - 06:53:20 11491
Oliver 06:38:21 -15.9 AT Down 17.6 179.0 Really Low 06:23:21 - 06:53:21 11479
Anarchist Mountain Observatory 06:38:21 -16.1 AT Down 17.8 179.2 Really Low 06:23:21 - 06:53:21 11474
Okanogan 06:38:21 -16.6 AT Down 18.5 179.0 Really Low 06:23:21 - 06:53:21 11451
Victoria 06:38:32 -15.5 AT Down 18.2 175.4 Really Low 06:23:32 - 06:53:32 11446
Brewster 06:38:21 -16.8 AT Down 18.7 178.8 Really Low 06:23:21 - 06:53:21 11441
Manson/Chelan 06:38:22 -16.9 AT Down 18.9 178.5 Really Low 06:23:22 - 06:53:22 11433
Wenatchee 06:38:23 -17.3 AT Down 19.4 178.3 Really Low 06:23:23 - 06:53:23 11415
Ellensburg 06:38:24 -17.7 AT Down 19.8 178.1 Really Low 06:23:24 - 06:53:24 11399
Yakima 06:38:25 -18.0 Dark Down 20.2 178.1 Low 06:23:25 - 06:53:25 11383
Toppenish/White Swan 06:38:24 -18.3 Dark Down 20.4 178.2 Low 06:23:24 - 06:53:24 11375
PNWRO 06:38:19 -19.0 Dark Down 20.8 179.7 Low 06:23:19 - 06:53:19 11364
The Dalles 06:38:26 -18.8 Dark Down 21.2 177.4 Low 06:23:26 - 06:53:26 11343
Maupin 06:38:26 -19.2 Dark Down 21.6 177.5 Low 06:23:26 - 06:53:26 11326
Sisters 06:38:28 -19.9 Dark Down 22.5 177.0 Low 06:23:28 - 06:53:28 11288
Bend 06:38:27 -20.2 Dark Down 22.7 177.3 Low 06:23:27 - 06:53:27 11279
Oregon Observatory 06:38:27 -20.3 Dark Down 22.9 177.2 Low 06:23:27 - 06:53:27 11271
Chiloquin 06:38:29 -21.4 Dark Down 24.2 176.7 Low 06:23:29 - 06:53:29 11212
Klamath Falls 06:38:29 -21.8 Dark Down 24.5 176.8 Low 06:23:29 - 06:53:29 11196
Cedarville 06:38:23 -22.9 Dark Down 25.3 178.4 Low 06:23:23 - 06:53:23 11168
Fall River/Burney 06:38:27 -23.0 Dark Down 25.7 177.1 Low 06:23:27 - 06:53:27 11141
Gimple 06:38:26 -23.9 Dark Down 26.6 177.7 Low 06:23:26 - 06:53:26 11098
Greenville 06:38:26 -23.9 Dark Down 26.6 177.6 Low 06:23:26 - 06:53:26 11098
Quincy 06:38:26 -24.1 Dark Down 26.8 177.6 Low 06:23:26 - 06:53:26 11088
Portola 06:38:24 -24.4 Dark Down 27.0 178.1 Low 06:23:24 - 06:53:24 11083
Dunrhomin 06:37:32 -26.9 Dark Up 25.4 193.4 Low 06:22:32 - 06:52:32 11074
Reno 06:38:22 -24.8 Dark Down 27.3 178.7 Low 06:23:22 - 06:53:22 11071
Nikitin 06:37:31 -27.1 Dark Up 25.6 193.4 Low 06:22:31 - 06:52:31 11065
CU-SBO 06:37:32 -27.1 Dark Up 25.6 193.4 Low 06:22:32 - 06:52:32 11063
Carson City 06:38:22 -25.1 Dark Down 27.6 178.7 Low 06:23:22 - 06:53:22 11052
Yerington 06:38:21 -25.5 Dark Down 27.8 179.4 Low 06:23:21 - 06:53:21 11043
Gardnerville 06:38:23 -25.4 Dark Down 27.9 178.8 Low 06:23:23 - 06:53:23 11040
Hawthorne 06:38:18 -26.1 Dark Down 28.3 179.9 Low 06:23:18 - 06:53:18 11020
Lee Vining 06:38:20 -26.5 Dark Down 28.9 179.4 Low 06:23:20 - 06:53:20 10990
Bishop 06:38:18 -27.2 Dark Down 29.5 180.2 Low 06:23:18 - 06:53:18 10958
Beatty 06:38:11 -28.1 Dark Down 29.9 181.9 Low 06:23:11 - 06:53:11 10933
Patrick 06:38:00 -30.2 Dark Up 31.2 185.0 Up 06:23:00 - 06:53:00 10847
Laughlin/Bullhead City 06:38:02 -30.3 Dark Up 31.5 184.2 Up 06:23:02 - 06:53:02 10833
Lake Havasu City 06:38:02 -31.0 Dark Up 32.2 184.5 Up 06:23:02 - 06:53:02 10794
Wildwood 06:38:18 -30.2 Dark Down 32.7 179.9 Up 06:23:18 - 06:53:18 10770
Idyllwild 06:38:11 -31.1 Dark Up 33.1 182.0 Up 06:23:11 - 06:53:11 10750
George/Scottsdale 06:37:53 -32.3 Dark Up 32.8 187.2 Up 06:22:53 - 06:52:53 10742
Calipatria 06:38:06 -32.0 Dark Up 33.6 183.3 Up 06:23:06 - 06:53:06 10712
Yuma 06:38:02 -32.6 Dark Up 34.0 184.3 Up 06:23:02 - 06:53:02 10684

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 01KG76, (2023/07/08 06:38UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.10 102
35Eta Oph      17:10:22.7 -15:43:29  2.6 11.57  95
PPM 267309     17:47:45.6 -22:28:40  6.1  0.70  85
PPM 267328     17:48:22.6 -23:13:58  8.3  0.11  85
01KG76         17:47:56.9 -23:10:44 16.9        85
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:29:20 UT

Marc W. Buie, Southwest Research Institute

RECON